Synthesis and Photo-luminescent Properties of PEEK with Blue Light-Emitting

doi:10.7517/j.issn.1674-0475.2007.04.267

Abstract

Abstract: Novel BOE-PEEK with blue light-emitting had been designed and synthesized by direct nucleophilic substitution reaction of difluoromonomer and 2,6-bis{4-[2-(4-hydroxylphenyl)ethylene]phenylene}benzo[1-2,4-5′]dioxazole as blue light-emitting core,which was prepared through Wittig reaction of 4-hydroxylbenzaldehyde with 2,6-bis(4-chloromethylphenylene)benzo[1-2,4-5′]dioxazole.The chemical structures of BOE-PEEK have been determined by the spectra,GPC,DSC and TGA.The analytic results showed the weight average molecular weight(M_w) was 1.38×10⁵,poly-dispersity index(PDI) was 4.35,glass transition temperature(T_g) was 195 ℃,beginning to decompose(T_d) at 440 ℃.The spectra data of BOE-PEEK gave that UV-Vis absorption λ_max was 372 nm and photoluminescent λ_max was 455 nm.When driving voltage was up to 15 V,the device brightness reached 530 cd/cm² and EL efficiency was 0.36 cd/A,which was consisted of substrate glass/indium-tin-oxide anode/BOE-PPV(single light-emitting layer)/aluminum cathode.

Key words: PEEK, benzo[1-2,4-5′]dioxazole, blue lightemitting, synthesis

CLC Number:

CAI Quan-yuan, MA Juan-juan, LI Xie, TONG Zhi-wei, ZHANG Tian-lin. Synthesis and Photo-luminescent Properties of PEEK with Blue Light-Emitting[J]. Imaging Science and Photochemistry, 2007, 25(4): 267-274.

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